Check-row corn-planter.



No. 789,360. PATENTED MAY 9, 1905.

v E. 0. DOAK;

CHECK ROW CORN PLANTER.

APPLICATION TILED SEPT. 23, 1904.

2 SHEETS-SHEET 2.

Patented May 9, 1905.

FFlCF.

EGBERT O. :DOAK, OF SAC CITY, IONVA.

Quack-now COHNJ-PLMNTEH.

SPECIFICATION forming part of Letters Patent No. 789,360, dated May 9,1905. Application filed September 23, 1904. $erial1l0. 225,700.

To all whom 111? imty concern.-

Be it known that I, EeBER'r O. DOAK, a citizen of the United States,residing at Sac City, in the county of Sac and State of lowa, haveinvented a new and useful Improvement in Check-Row Corn-Planters, ofwhich the following is a specification.

My object is to improve the construction and operation of a check-rowcorn-planter by providing simple, strong, and durable means for markingthe ground with furrows extending parallel with the line of advance asthe machine traverses a field from one end to the other.

My invention consists in the construction, arrangement, and combinationof marking mechanism with a carriage and mechanism for elevating andretaining inoperative the runners, as hereinafter set forth, pointed outin my claims, and illustrated in the accompanying drawings, in whichFigure 1 is a top plan view of the carriage adapted to be connected withrunners in any suitable way and shows my marking mechanism and mechanismfor elevating and retaining runners connected therewith in operativepositions. Fig. 2 shows a crank-shaft in bearings adapted to be fixed tothe carriage-frame and provided with means for connecting a spring and amarker-carrier therewith. Fig. 3 shows a device adapted for regulatingthe tension of a spring and connecting it with a lever that can be usedfor reversing the position of the marker relative to the carriage andfor lifting the runners. Fig. 4: is a perspective view of the markerdetached from the marker-carrier. Fig. 5 is a side view of the planter,partly in section, and shows the positions of my operative partsrelative to each other and the runners. Fig. 6 is a perspective viewthat shows the rear end portion of the carriage-frame and means forconnecting the crank-shaft therewith as required for practical use.

The numeral 10 designates the carriageaxle, and 12 the carriage-frame,mounted upon traction-wheels 13 in any suitable way. An auxiliary frame14:, that may vary in shape as desired, is fixed within the rear portionof the frame '12, and a shaft-bearer 15 is fixed to its center inalinement with a shaft bearer 16, fixed to the rear and center of thecarriage-frame 12 to support a rock-shaft 17, that has an elbow-shapedcrank 18 at its front end and a forked extension 19 formed on or fixedto its rear end, as shown or in any suitable way.

A cross-bar 20 is fixed to the parallel sides of the carriage-frame 12and in front of the axle 10 and a lever 21 fulcrumed thereto to projectupward, as shown in Fig. 5, and a rack 22 fixed to the cross-bar and apawl con nected with the leverto engage the rack as required for lockingthe lever to the crossbar, as shown in Fig. 5 or in any suitable way. Alever 23 is fixed in a crossed position to the lower end of the lever 21and a foot-rest 24 formed on or fixed to its upper end to serve as atreadle, and the lower end of the treadle is connected with the rear endof the carriage-pole 25 by a link 26 in such a manner that the rear endof the pole connected with the runners, as shown in Fig. 5, can bedepressed by footpressure on the treadlc as required to lower therunners into operative position on the ground.

A cross-head 27 is fixed to the rear and lower end of the lever 23 toengage the crank 18 on the front end of the crankshaft 17 in such amanner that when the rear end of the lever 23 is depressed by therearward movement of the lever 21 the cross-headv 27 will actuate thecrank-shaft as required for reversing the position of a marker-carrier28, pivoted in the rear forked end of the crank-shaft. (Shown in Fig.1.) A reversible markerhead. 29 is fixed to the free end of themarkercarrier.

To automatically throw the marker-carrier from right to left, and viceversa, a coiled spring 30 is connected with the rear end of thecarriage-frame 12 and also connected with the lever 21 by abearer 31,fixed to the lever, and a bifurcated link 32, as shown in Fig. 3, insuch a manner that when the lever 21 is pressed forward and locked tothe rack 22 power will be stored in the spring, so that 'whenever thelever 21 is released the spring will resume its normal position and inso doing pull the lever 21 rearward, and thereby depress the rear end ofthe lever 23, that engages the crank 18 and actuates the shaft 17 asrequired to reverse the position of the marker-carrier 28.

To regulate the tension of the spring 30, the rear end of the link 32 isprovided with a plurality of perforations, through which a movable bolt33 is passed for adjustably connecting the spring with the link.

To release the lever 21 from the force of the spring 30 and to operatejointly the levers 21 and 23 by foot-pressure upon the treadle 24 or byhand-pressure upon the lever 21 or by simultaneous hand and footpressure as required to press the runners to enter the ground, a lever35% is pivoted to the bearer 31, and the link 32 is pivoted to the leverin such a manner that when the lever 8 1 is turned upward and rearwardthe connection between the spring 30 and the lever 21 will be lengthenedas required to prevent the spring from resisting the forward motion ofthe lever 21.

A rope 35 is fixed to the marker 29 and to the front and center of therunner-frame in such a manner that it will keep the markercarrier 28 inright-angled position relative to line of advance when the marker is inoperation.

Having thus set forth the purposes of my invention and the constructionand function of the different elements and subcombination and thearrangement and combination of all the parts, the practical operationand utility of the invention will be readily understood by farmers andothers familiar with the art to which it pertains.

What I claim as new, and desire to secure by Letters Patent, is

1. In a corn-planter, a rock-shaft provided with an elbow-shaped crankat one end and means for connecting a marker-carrier with its other end,in combination with the rear end and center of a carriage-frame, tooperate in the manner set forth for the purposes stated.

2. In a corn-planter, an auxiliary frame fixed within the rear end of acarriage-frame and provided with a shaft-bearing at its center, ashaft-bearing fixed to the rear and center of the carriage-frame, arock-shaft pro vided with an elbow-shaped crank at its front end, amarker-carrier fixed to the rear end of the rock-shaft and means toactuate the rockshaft, arranged and combined to operate in the mannerset forth, for the purposes stated.

3. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriageframe provided with an elbow-shaped crank at its front end,a lever fulcrumed to the carriage-frame in front of the carriage-axle, asecond lever fixed across the lower end of the first lever and providedwith a cross-head at l l l l l l I its rear end to engage theelbow-shaped crank of the rock-shaft, arranged and combined to operatein the manner set forth for the purposes stated.

4. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriage frame provided with an elbow-shaped crank at its front end,a lever fulcrumed to the carriage-frame in front of the carriage-axle, asecond lever fixed across the lower end of the first lever and providedwith a cross-head at its rear end to engage the elbow-shaped crank ofthe rock-shaft, a treadle connected with the front end of the secondlever and the treadle connected with rear end of a pole fixed to therunner-frame and the runner-frame pivotally connected with the front endof the carriageframe, arranged and combined to operate in the manner setforth for the purposes stated.

5. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriageframe provided with an elbow-shaped crank at its front end,a lever fulcrumed to the carriage-frame in front of the carriage-axle, asecond lever fixed across the lower end of the first lever and providedwith a cross-head at its rear end to engage the elbow-shaped crank ofthe rock-shaft, a treadle connected with the front end of the secondlever and the treadle connected with rear end of a pole fixed to therunner-frame and the runner-frame pivotally connected with the front endof the carriageframe and means to lock the two levers jointly to thecarriage-frame, arranged and combined to operate in the manner set'forthfor the purposes stated.

6. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriageframe provided with an elbow-shaped crank at its front'end,a lever fulcrumed to the carriage-frame in front of the carriage-axle, asecond let er fixed across the lower end of the first lever and providedwith a cross-head at its rear end to engage the elbow-shaped crank ofthe rock-shaft, a coil-spring fixed to the rear and center of thecarriage-frame and pivotally connected with the first lever, arrangedand combined to operate in the manner set forth for the purposes stated.

7. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriageframe provided with an elbow-shaped crank at its front end,a lever fulcrumed to the carriage-frame in front of the carriage-axle, asecond lever fixed across the lower end of the first lever and providedwith a cross-head at its rear end to engage the elbow-shaped crank ofthe rock-shaft, a coil-spring fixed to the rear and center of thecarriage-frame and pivotally connected with the first lever and meansfor regulating the tension of the spring, arranged and combined tooperate in the manner set forth for the purposes stated.

8. In a corn-planter, a rock-shaft in bear IIO ing's at the rear andcenter of the carriageframc provided with an elbow-shaped crank at itsfront end, a lever fulcrumed to the carriage-frame in front of thecarriage-axle, a second lever fixed across the lower end of the firstlever and provided with a cross-head at its rear end to engage theelbow-shaped crank of the rock-shaft, a coil-spring fixed to the rearand center of the carriage-frame and pivotally connected with the firstlever and means for adjusting the spring relative to the first lever,arranged and combined to operate in the manner set forth for thepurposes stated.

9. In a corn-planter, a rock-shaft in bearings at the rear and center ofthe carriageframe provided with an elbow-shaped crank at its front end,a lever fulcrnmed to the carriage-frame in front of the carriage-axle, asecond lever fixed across the lower end of the first lever and providedwith a cross-head at its rear end to engage the elbow-shaped crank ofthe rock-shaft, a coil-spring fixed to the rear and center of thecarriage-frame and pivotally connected with the first lever by means ofa link, a bearer fixed to the first lever and a small lever pivoted tothe bearer and to the end of the link, arranged and combined to operatein the manner set forth for the purposes stated.

10. In a cornplanter, a carriage-frame pivotally connected with arunner-frame, a lever fnlcrnmed to the central part of the carriageframein front of the axle, a rack and pawl for locking the lover, a secondlever fixed across the lower end portion of the first lever, a treadlefixed to the front end of the second lever and connected with the rearend of a pole fixed to the runner-frame, a cross-head on the rear end ofthe second lever, a rock shaft in hearings on the rear and center of thecarriage-frame provided with an elbowshaped crank at its front end, amarker-carrier connected with the rear end of the rock shaft, a markeron the free end. of the carrier, a rope connected with the carrier andthe rnnner-frame, a coil-spring connected with the rear and center ofthe carriage-frame and adjnstably connected with the first lever, allarranged and combined to operate in the manner set forth for thepurposes stated.

EGBERT O. DOAK.

Witnesses:

J. H. STONER, WV. H. HART.

